2007 Suzuki Rmz 450 Specs, Price & Review 2024
Looking to learn all about the 2007 Suzuki RMZ 450 motocross bike? In this in-depth 2024 review, we’ll cover everything you need to know: engine, suspension, performance, pricing, pros/cons and more. Read on to find out if the RMZ 450 is the right used bike for you.
Table of Contents
Introduction
The Suzuki RMZ 450 was introduced in 2004 as a lightweight, competitive 450cc motocross bike. In 2007, Suzuki made improvements to the engine, suspension, styling and more, resulting in a top contender in the class. Even over 15 years later, the 2007 RMZ 450 still delivers impressive power and nimble handling that holds up against newer 450s. Riders looking for an affordable used bike with strong mid-range punch and smooth delivery will appreciate this Suzuki.
Engine & Transmission
At the heart of the 2007 RMZ 450 is a 449cc, liquid-cooled, 4-stroke single cylinder DOHC engine with electronic fuel injection. This motor utilized lightweight aluminum internals and a 13.5:1 compression ratio to generate a competitive powerband.
Here are some key engine specs and technology:
- Displacement: 449cc
- Bore x Stroke: 96mm x 62.1mm
- Compression Ratio: 13.5:1
- Valvetrain: DOHC, 4 titanium valves
- Fuel System: Electronic fuel injection
- Starting: Kickstart
- Lubrication: Wet sump
- Transmission: 4-speed constant mesh
This engine produced right around 52 peak horsepower at peak rpm according to most estimates. More importantly, it delivered usable, hook-up power across the mid-range. The RMZ 450 had a linear, tractable delivery that was easy to control yet still competitive.
The 4-speed transmission paired with the motor featured smooth, reliable shifting. The hydraulic clutch helped provide good feel and modulate ability. Overall, the drivetrain of the 2007 RMZ 450 was a strong suit and delivered confident acceleration.
Key Features & Technology
In addition to its powerful engine, the 2007 RMZ 450 featured:
- Aluminum Frame – Lightweight twin-spar aluminum frame provided nimble handling and stability. Optimized rigidity balance.
- Suspension – Upgraded inverted Kayaba fork with 48mm stanchions and 12.2 inches of travel. Kayaba rear shock offered 12.4 inches of travel and adjustable preload, rebound and compression damping.
- Bodywork – Redesigned radiator shrouds and airbox for improved airflow and cooling. Sharp styling and graphics.
- Brakes – Nissin front and rear disc brakes offered strong stopping power with good feel. 250mm rotor up front, 240mm rear.
- Wheels & Tires – Black anodized aluminum rims were paired with Dunlop radial tires (80/100-21 front, 110/90-19 rear).
- Dimensions – Compact size with 38.6 inch seat height, 54.9 inch wheelbase, and 231 pound dry weight.
The RMZ 450 continued Suzuki’s commitment to providing 450 class riders with competitive technology and components. The overall package was well-rounded and capable on track.
2007 Suzuki RMZ 450 Suspension & Handling
A motocross bike lives and dies by its suspension performance, and the 2007 RMZ 450 was quite good in this regard. Up front was an inverted Kayaba fork with 48mm stanchions, 12.2 inches of travel, and adjustable compression and rebound damping.
Out back, a Kayaba rear shock with 50mm piston offered 12.4 inches of travel and adjustable preload, compression and rebound. This allowed riders to fine-tune the suspension for their weight and track conditions.
In stock form, the RMZ 450 suspension provided a compliant, controlled ride. It soaked up hits and chatter nicely while also resisting bottoming under big landings or g-outs. The balanced chassis handled well, with light steering and excellent straight-line stability.
The RMZ 450 was nimble yet calm through rough sections and rutted corners. In the air it was stable and confidence-inspiring. Overall, the handling was rated as one of the best in the 450 class when new.
2007 Suzuki RMZ 450 Dimensions, Ergonomics & Weight
As expected for a 450cc motocrosser, the 2007 RMZ 450 featured a relatively compact design optimized for performance:
- Seat Height – 38.6 inches
- Wheelbase – 54.9 inches
- Ground Clearance – 13.4 inches
- Fuel Tank Capacity – 1.5 gallons
- Curb Weight – 100 kg (220 lbs) dry
The seat height falls on the taller side which may be an issue for shorter riders. However, the narrow midsection and flat seat made it fairly accessible. The RMZ 450 provided a neutral riding position tailored for aggressive motocross riding.
Despite carrying 2.7 gallons of oil and fuel, the curb weight was kept impressively light. Combined with the rigid chassis and balanced suspension, this allowed the 450 to carve corners and move like a smaller bike. Overall ergonomics and dimensions were dialed.
2007 Suzuki RMZ 450 Top Speed, 0-60, Horsepower & Performance
When it debuted, the RMZ 450 delivered best-in-class power and performance:
- Top Speed: Approx. 70 mph
- Horsepower: Approx. 58 hp at peak rpm
- Power Delivery: Smooth, tractable, hard-hitting mid-range
Testers praised the RMZ 450 motor for its broad, usable powerband that surged from mid-revs through the top end. It provided competitive acceleration without being overly peaky or difficult to control.
The RMZ 450 had the punch to drive out of corners, clear big jumps and pull through deep sand. Throttle response was crisp without any hiccups or lags in power delivery. Overall it had excellent runability and flexibility for motocross riding.
The Suzuki RMZ 450 proved itself as one of the top performers in the 450 class when new. It combined a responsive engine with dialed suspension and handling to create a very capable race bike. Even today, its performance holds up respectably against newer 450s.
2007 Suzuki RMZ 450 Reliability & Problems
The 2007 RMZ 450 was relatively reliable for a high-performance single-cylinder motocross bike, especially when properly maintained. The key with any 450 MX’er is staying on top of maintenance like oil changes, valve checks, etc.
Some common issues to look out for on used 2007 RMZ 450s include:
- Valve adjustments – The shim-under-bucket valves require periodic adjustment. Check service history.
- Transmission – Gears may become notchy or difficult to shift over time.
- Overheating – Clean radiators and check cooling system components.
- Electrical gremlins – Fuel injection may need recalibration if the bike sits unused for long periods.
- Clutch wear – The clutch plates and basket can wear prematurely if abused. Slipping or fading clutch possible.
Overall though, the 2007 RMZ 450 was a well-engineered bike for its time and many examples remain on the trails today. Choosing a bike with documented service and few mods is recommended for best longevity.
2007 Suzuki RMZ 450 Specs & Features Chart
| Specification | Measurement |
|---|---|
| Engine | 449cc liquid-cooled DOHC 4-stroke single |
| Bore x Stroke | 96mm x 62.1mm |
| Compression Ratio | 13.5:1 |
| Valvetrain | DOHC, 4 titanium valves |
| Fuel System | Electronic fuel injection |
| Transmission | 4-speed constant mesh |
| Clutch | Wet multi-plate |
| Front Suspension | Inverted Kayaba fork, 12.2 in. travel |
| Rear Suspension | Kayaba single shock, 12.4 in. travel |
| Front Brake | Single disc, 250mm |
| Rear Brake | Single disc, 240mm |
| Front Tire | 80/100-21 Dunlop radial |
| Rear Tire | 110/90-19 Dunlop radial |
| Wheelbase | 54.9 inches |
| Seat Height | 38.6 inches |
| Ground Clearance | 13.4 inches |
| Fuel Capacity | 1.5 gallons |
| Dry Weight | 100 kg (220 lbs) |
2007 Suzuki RMZ 450 Price & Buying Guide
When new, the 2007 Suzuki RMZ 450 carried an MSRP of $6,799. Today on the used market these bikes trade hands for:
- Good Condition: $1,800 – $2,500
- Excellent Condition: $2,500 – $3,300
Pricing varies based on factors like mileage, modifications and overall condition. As with any used bike, be sure to thoroughly inspect and test ride it yourself before buying.
Watch out for issues like engine wear, fork/shock leaks, damage from crashes, etc. Ask the seller for maintenance records and about any repairs or performance mods.
In terms of value, the RMZ 450 provides strong mid-size 450cc performance at a more budget-friendly price than many newer motocross bikes. Just expect to spend money on maintenance and minor repairs as needed.
2007 Suzuki RMZ 450 Review Conclusion
The 2007 Suzuki RMZ 450 remains a competitive used 450 motocross bike even 15+ years after its release. It’s still capable of tackling motocross tracks, trails and off-road terrain with confidence.
Here’s a quick rundown of the RMZ 450’s strengths and weaknesses:
Pros:
- Strong, tractable DOHC engine
- Dialed power delivery with hard-hitting mid-range
- Nimble handling and balanced chassis
- Compliant suspension soaks up hits
- Quality components like Kayaba fork
- Excellent brakes and ergonomics
- Affordable price for performance
Cons:
- Tall seat height for some riders
- 1.5 gallon fuel tank is small
- Transmission can be notchy
- Increased maintenance common on older bike
- Clutch can fade if abused
While not quite as advanced as the latest 450 MX bikes, the ’07 RMZ 450 has potent performance and nimble handling that holds its own. For riders wanting a competitive used 450, it’s a great choice at a very attractive price point.
Vs 450cc MX Competitors
The 450cc motocross class featured intense competition in 2007. Here’s how the RMZ 450 stacked up against its top rivals:
2007 Honda CRF450R
- High revving DOHC 4-stroke single
- Powerful motor with electric start
- Softer suspension suited better for trail use
- More street legal features like lights
2007 Yamaha YZ450F
- Strong, high-output 5-valve engine
- Stiff, track-focused suspension package
- Aluminum bilateral beam frame
- Excellent cornering and front end feel
2007 Kawasaki KX450F
- 449cc DOHC motor made good power
- Rigid perimeter chassis design
- Balanced suspension and ergonomics
- Very competitive overall package
While the Japanese brands all had excellent 450s, the RMZ 450 stood out for its broad power, nimble handling and race-ready focus. It quickly became a favorite for aspiring amateur racers.
What Owners Say About the 2007 Suzuki RMZ 450
To get an idea of real world experiences, here are some owner reviews of the 2007 Suzuki RMZ 450:
Positive Owner Feedback
“Super fun and capable bike! Engine pulls hard through the mid-range and handling is dialed for the track. Quality components and very reliable if maintained properly.”
“I love this RMZ 450! It has tons of usable power without being overly hard to control. With some suspension tuning it handles awesome and is nimble in the corners.”
“The ’07 RMZ 450 is still one of my favorite bikes I’ve owned. It’s lightweight and just does everything right. I got it for a steal and enjoy ripping on it.”
Constructive Owner Feedback
“The RMZ is great overall but the seat height is really tall and can be intimidating. I had to get a lowering kit which helped.”
“Fuel injection system had some hiccups after sitting for a while but got it sorted. Valve adjustments are kind of a pain as well.”
“My only gripe is the transmission has some false neutrals and gear grinding after hard use. I baby it more now and it’s fine.”
Overall most owners report great power, handling and reliability from the 2007 RMZ 450 when properly setup and maintained. It remains popular on used market for offering big 450cc performance at an affordable price point.
Final Thoughts On The 2007 Suzuki RMZ 450
Suzuki’s RMZ 450 marked the brand’s aggressive return to MX prominence in the mid-2000s. By 2007, the RMZ package was dialed-in and extremely competitive.
While KTM and Yamaha have recently battled for 450cc supremacy, the ’07 RMZ 450 proved Suzuki could run with the Big 3 Japanese brands. It will go down as one of the most well-rounded 450s of its era.
In 2023, the RMZ 450 remains a great option for trail riders or racers on a budget. With proper care and maintenance, it can still deliver years of fun performance. Overall the 2007 Suzuki RMZ 450 stands out as a hard-hitting middleweight MX’er with an addicting powerband and excellent handling.
